I truly hope you try your best to look at the good your doing by sharing your testimony. The fears will always be there but try to push them back while you share your truths and do so remembering these people truly want to help you and help the future victims of such crimes.
I say this after recently reading through a essay my 18 year old daughter wrote about her experience at age 11 in the witness box. Having to face her abuser along with a room full of jurors and spectators. Some of the things she wrote she never told me before. It was heartbreaking and yet very healing, she knew at that very young age that it was necessary to face that very uncomfortable day in order to stop it from happening to someone else.
I think people like yourself and my daughter are so brave, to put you own fears aside to help others is very commendable. I hope you find some healing from what you are doing.